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https://issues.apache.org/jira/browse/SPARK-25056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16573394#comment-16573394
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Apache Spark commented on SPARK-25056:
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User 'wangyum' has created a pull request for this issue:
https://github.com/apache/spark/pull/22038
> Unify the InConversion and BinaryComparison behaviour when InConversion's
> list only contains one datatype
> ---------------------------------------------------------------------------------------------------------
>
> Key: SPARK-25056
> URL: https://issues.apache.org/jira/browse/SPARK-25056
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Yuming Wang
> Priority: Major
>
> {code:java}
> scala> val df = spark.range(4).toDF().selectExpr("cast(id as decimal(9, 2))
> as id")
> df: org.apache.spark.sql.DataFrame = [id: decimal(9,2)]
> scala> df.filter("id in('1', '3')").show
> +---+
> | id|
> +---+
> +---+
> scala> df.filter("id = '1' or id ='3'").show
> +----+
> | id|
> +----+
> |1.00|
> |3.00|
> +----+
> {code}
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